7.
单纯感染时使用抗菌药物的联用情况
| 病原种类 | 例数 | 一种 | 两种 | 三种 |
| 单纯细菌（确诊） | 11 | 10 | 1 | 0 |
| 单纯细菌（疑似） | 295 | 242 | 51 | 2 |
| 单纯病毒 | 33 | 30 | 3 | 0 |
| 单纯支原体 | 148 | 125 | 23 | 0 |
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